康宁corning 431842 CENT BOTTLES,250ML,PC,W/SILICON O-RING SCREW CAP,NS,BK,4/36 4个/包 9包/箱 3995.66
修饰性PEG
DSPE SH COOH MAL NH2 巯基 羧基 氨基 四臂 八臂PEG WAKO和光纯药
康宁corning 431842 CENT BOTTLES,250ML,PC,W/SILICON O-RING SCREW CAP,NS,BK,4/36 4个/包 9包/箱 3995.66